Fluid fuel burning stove



Patented ont. 15, 1940 l i I f 2,217,750 FLUID FUEL BURNING STOVE Albe*A Hckenstrm, Lidingo, Sweden Application July ze, 1939, serial No. 286,552

In Sweden March 28, 1938 1o claim (Cl. 12e-3s) My, invention relates to a fluid fuel burning and 2, the interior construction of the combined stove and particularly to aportable stove of this hinge and valve I4 isthe same and it will be nature. j described in. connection with these gures. The

In accordance with my invention there is promember I4 includes amputer vhousing t6 having 5 vided a base portion carrying one or more burna tapered bore I1. Integral with housing I6 is 6 ers and a cover hinged thereto and carrying a abracket I8, shownin1 igs. land 2,which-brack et fuel reservoir. The conduit connecting the reser.- "is rigidly secured to a portion of the ybaseJ. voir with the burner is either flexible or provided Rotatably mounted within housing I6 is a valve with a pivoted connection. in order `to permit memberv I9 integralv with an arm 20, the outer 10 hinging of 'the cover, and `a. valve is disposed in end of which arm is rigidly secured to the cover l0 this conduit and operatively connected to the I3.` Valve member I9 i'sfformed with an ,annular cover so as to be controlled by the position of the ange 2I against which is forced a packing 22 latter. Preferably. both fthe pivoted connection by' means of agland nut 23 which is threaded into and the valve are combined and arranged'a's a the open end of housing I6. Thus, axial displacehinge connecting the cover to-the base; the arment of the member I3 withinlthe housing I6 is '15 rangement being such that when the cover is `prevented and these wo members serve as a. closed the valve is likewise closedand when the hinged connection between the base I0 and the cover is open the valve is open. Furthermore, cover I3. f

there is provided a passage for admitting 'air y Arm 201s formed with a fuel passage 24 which into the reservoirasfuel is withdrawn. This pascommunicates with the bottom of reservoir 14 20 sage likewise passes through the hinge, which and with an axially extending bore 25 formed serves as a valve therefor, so that-the air paswithin valve member I3. vThe other end of bore sage is closed when .the cover is closedA in order communicates with a radially extendinglbore to prevent the leakage of .fuel therethrough. 26 forming a valverport which may be turned 25 Further objects. and advantages ai my inveninto and out oi' alignment with' -a passage 21 25 tion will be apparent vfrom the followmgdescripformed in -a nipple 28 extending from the side of tion considered in connection with theaccomhousing I6. A conduit 29 connects passage 21 panying drawing which form apart of this speciwith the fuel burner I I. A valve 29 may be placed l fication and of which: in this conduit andcontrollecl` bya knob 30 for'fA 30 j Fig. 1- is a cross-sectional view of one embodiregulating'flow of fuel to the burner. The locasfo ment of my invention and is taken on the line tion of radial bore 26 with Vrespect to passage 21 UNITED STATI-:s PATENT. OFFICE i I- I of Fig. 2; is such that these are in alignment when the cover 1 Fig. 2 is a cross-sectional view taken on the line is inthe open position shown in Figs. land 2, but 2--2 of Fig. l; j. are out of alignment when the'I cover vis closed.

I Fig. 3 isa cross-sectionalvvie'w on an enlarged 1 Arm 24 is also provided witha passage 3| Aone 35 scaleshowing another embodiment of my invenend of which communicates with an axially extion; tending bore 32 formedin valve member'ls. Bore- Fig. 4` -i s"a cross-sectional view, takn on the 32 -in turn communicates with a radially extendline4 -4ofFig.3; and 5 ingibore 33 which may be turned intoand out 40 Fig. `5 is a cross-secticnalview taken on the 0f alignmeIlUWth a Passage 3 4 in .housing l5, 40 line 5`4 of Fig. 4. n which. passage leads to the atmosphere. 'I'he rel- J Referring more particularly to Figs.. 1 and 2,- ative locations of bore 33 and passage 44 are such reference character I0 designates abase portion that they are in alignment .When bore 25d-Sli!!- preferably made of sheet metal. Mo'iintediwithinA `alignment WithpaSSage 21. Hence, bOTe 3315 C011- the base portion isa fuel burner. II.v Above it" nected-to the atmosphere when the coverfisf-openf 45 are supports I2 for cooking utensils, Reference, and disconnected therefrom when the cover Ais character I3 designates generally-a cover which closed. The other end of DESS/agen in arm 24,1.

isfsecured to the base portionlf'ill' by `means of .a communicates with a conduit 35 which extends combined hinge and valve I4. Formed/within the to the upper part of reservoir 14. Preferablythe cover I3 is a-fuel reservoir 14 provided with a upper end of conduit 35 is formedas one or more 50 4 filling opening-which is normally closed by means loops 36 in order to provide an air sealto preof a screw cap I5 or thelike. v vent the entry of liquid fuel into the open end/ "I'he member I4 is shown more in detail in Figs. of the pipe when the cover is in closed position. y 4 and 5. While these figures illustrate an em- The above described device operatesv as follows:

bodiment different froml that shown in Figs. 1 With the parts in the position shown inFigs. 1 55- and 2, fuel flows by gravity from reservoir 14 through the passage 24 in arm I1 and the passage 25 in valve member I9 to the radial bore 26. With the cover in the open position bore 26 is in alignment with passage 21, and consequently fuel ows into passage21 and through conduit 29 to the burner II. The amount of fuel flowing may be controlled by adjusting the valve 29 by means of the knob 30.

As fuel flows out of the reservoir, air enters through the passage 34 in the valve housing I6,

' the bores 33 and 32 in the valve member I9, the

passage .3| in the arm 24 and the conduit 35, inasmuch as the bore 33 is in alignment with the passage 34 when the cover is open. Thus, the fuel may iiow by gravity out of the reservoir without tending to create a vacuum therein.

When the cover I3 is closed this causes valve member I9 to be rotated approximately 90 with respect to housing I6. Thus, bore 28 is turned out of registration with passage 21 and the iiow of fuel to the burner is cut oil. Likewise, bore 33 is turned out of alignment with passage 34 and the communication between thev reservoir and the atmosphere is closed, thus assuring that no fuel will escape through the air vent, regardless of the positionvinto which the portable stove may be turned. l

Due to the loops 33 near the upper end of the conduit 35 and due to the fact that this conduit is closed from the atmosphere, liquid fuel will not flow into the conduit when the cover is in closed position for the reason that the air trapped in the remainder of the conduit will not flow around the loops, the axis of which is horizontal whenV the cover is closed. Hence, the air trapped in this manner within the conduit prevents the entry of liquid. If such liquid were to enter, it could not leak out as long as the cover remains closed, but would run out when the cover is next opened. 1 In the embodiment illustrated in Figs. 3 through 5, the supply of fuel to the burner is regulated by adjusting .the angular position of the cover when open to thereby vary the flow through the valve I4. As is shown particularly in Figs. 3 and 4 an arm 40 is integral with or rigidly secured to valve member I9 and arm 20 so as to be pivoted therewith. Integral with or rigidly secured to housing I5 is a bracket 4I 'the end of which is threaded so as to receive a threaded pin 42. One endof the pin extends outside of the base III where it is provided with a knob 43 while the other end of the pin is adapted to contact arm 40. A coil spring 44 is received within a cylindrical member 45 which is carried by the arm 4I. `The free end of spring 44 is arranged to be contacted by a projection k 43 formed on arm 40. Thus, the spring 44 tends "to move the arm 40 in a counterclockwise direc-` tion, as viewed in Fig. 3, while the pin 42 when screwed against the arm 40 turns it in a. clockwise direction.

The relative locations of the bores 26 and 3 and the passages 21 and 34, respectively, are such i'that when the arm 40 is in contact with the end action of spring 44, the bores and passages are brought gradually into alignment. In this way, the area of the valve openings may be regulated so as to control the ilow of fuel to the burner,

as well as to control the flow of air to the. upper part of the reservoir.

A very fine adjustment of the valve may be obtained if the housing IB is formed with a tapered recess 41 adjacent to the inner end of passage 21, as is clearly illustrated in Fig. 5.

Spring 44 not only serves for the purposes above' described, but also acts as a resilient stop or bumper for preventing damage to the parts if the cover I I is thrown open too suddenly.

While I have shown two more or less specific embodiments of my invention, this has been done for purposes of illustration only and various modifications thereof fall within its scope. For instance, while I have shown both the fuel conduit and the air conduit passing through a single combined hinge and valve, it is obvious that two such combined hinges and valves could be employed, the fuel conduit 'passing through one and the air conduit through the other. Likewise while only one burner has been shown, it is clear that a plurality of such burners could be connected to the conduit 23 without departing from the scope of my invention, which is to be determined by the appended claims.

What is claimed is: Y

1. In a stove for burning fluid fuel, a base portion, a fuel burner carried by said base portion, a cover hinged to said base portion, a fuel vreservoir carried by said cover, conduit means connecting said reservoir to said burner, and valve means interposed in said conduit for controlling ilow therethrough and operatively connected to said cover so as to be open when the cover is open and closed when the cover is closed.

2. In a stove for burning uid fuel, a base portion,` a fuel burner carried by said base portion, a cover for said base portion, a fuel reservoir carried by .said cover, conduit means connecting said reservoir to said burner, avalve having relatively rotatable elements interposed in said conduit for controlling flow therethrough, means connecting one of said elements to said base portion, and means connecting the other element to said cover whereby opening and closing of said cover opens and closes, respectively, said valve.

3. In a stove for burning fluid fuel, a base portion, a fuel burner carried by said base portion, a cover for said base portion, a fuel reservoir carried by said cover, conduit means connecting said reservoir to said burner, a valve having relatively rotatable elements interposed in said conduit for controlling flow therethrough,

means connecting one of said velements lto said base portion, means connecting ,the other element to said cover whereby opening and closing of said cover opens and closes. respectively, said valve, and means to adjust the open position of said cover to .thereby regulate the degree of opening of said valve.

4. In a stove for burning fluid fuel; a base p0rtion, a fuel burner carried by said base portion, l

a cover hinged to said bas'e portion, a fuel reservoir carried by said cover, conduit means connecting said reservoir to said burner, conduit means venting said reservoir to the atmosphere. and valve means interposed in both of said conduit means for controlling flow therethrough and operatively connected to said cover so as to be open when the cover is open and closed when the cover is closed.

5. In a stove for burning fluid fuel, a base portion, a fuel burner carried by said base portion, a cover for said base portion, a fuel reservoir carthe passages in said elements being so arranged e that both passages are openwhen said cover is open and closed when the cover is closed.

6. In a stove for burning uid fuel, a base pory tion, a fuel burner carried by said base portion,

` 'to said base, a fuel conduit leading from said reservoir to a passage in the first-mentioned element, a fuel conduit leading from the corresponding passage in the other element to said burner, an air conduit lleading from said reservoir to another passage in said fir t-mentioned element, an air conduit leading fro the other passage in said other element to the txnosphere, the passages in said elements bein both passages are open when\\said cover is open and closed when the covex` is closed, and means to adjust the open position said cover to thereby regulate \the degree of pening of said passages. y

'7. In a stove for burning fluid fuel, a base portion, a fuel burner carried by said base portion,

a cover, a hinge structure for pivotally securing* said cover to said base, said structure including inner and outer relatively rotatable parts, one of said parts being connected to said base and the other to said cover, said parts having passages kalignable by rotation of said parts, a fuel reservoir carried by said cover, a' conduit connecting said reservoir with the passage in the part connected to the cover, and a conduit connecting the passage inkthel other part with said burner, said passages being so locatedgthat they are in alignment when .said cover is open. and out o alignment when the cover is closed.

8. In a stove for burning liquid fuel, a base so arranged that' may be adjusted to re `ing of said valve.

portion, a fuel burner carried by-said base portion, a cover hinged to said base portion, a fluid reservoir' carried by said cover, conduit means for connecting said reservoir to said burner, conduit means for connecting said reservoir to the atmosphere, and valve means interposed in both ofv said conduit means for controlling flow therethrough and operatively connected to said cover so as to be open when the cover is open and closed when the cover is closed, the second-mentioned conduit means communicating with said reservoir at a point which is at the top of the reserlr when the cover is in open position, and means for preventing ,entry of liquid into said i second-mentioned conduit means when the cover is in closed position.

9. In a stove for burning liquid'fuel, a base portion, a. fuel burner carried by said base portion, a cover hinged to 'said base portion, a fluid A reservoir carried by said cover, conduit means for co necting said re ervoir to said burner, conduit me\ns for connec ing said reservoir to the at mosphere, and valve means-interposed in both of said \conduit means for controlling flow therethrough and operatively connected to said cover so as \to be open when -the cover is open and closed when the cover is closed. the second-mentioned conduit means communicating with said reservoir `at a point whichis at the top of the reservoir lwhen the cover is in open position, the end of said secon\dmentioned conduit means being formed as an\air seal to prevent entry of liquid therein when the cover is in closed posibaseportion, means connectingthe other ele- -ment to said cover whereby opening and closing of said cover opens and closes. respectively, said valve, resilient means tending to move 'said coverY toward closed-position, and a threaded member for moving 'said co er against the'force of said spring, whereby the pen `position of said cover ate the degree of open- Hcms'rnm u `means connecting one of said elements to said 

